Quill check for narrow ware loom



2,781,790 y QUILL CHECK Fon NARRow WARE LooM Allan S. Hutchins, Oakham, Mass., assignor to Crompton & Knowles Loom Works, Worcester, Mass., a .-icorporation of Massachusetts This invention relatesto improvements in looms more particularly of the narrow ware type and itis the general object of the invention to provide means for preventing overrun of the quill when the shuttle reaches the end of its travel.

Shuttles for narrow ware looms ordinarily employ a quill which rotates on a pin or the like to pay olf weft for the weaving operation. It is customary to use a pad tension which presses against the weft of a quill t serve the purpose of creating tension in the weft and also act to some extent as a brake on the quill. When large vquills are used, however, especially when they are fully rice in the direction of arrow 3, Fig. 2, showing a shuttle approaching the end of its travel in a shuttle block but with the checking member spaced from the welt quill in the shuttle,

Fig. 4 is a view similar to Fig. 3 but shows the shuttle atftheend of its path` of movement with the check in contact with the quill,

Fig. 5 is an enlarged section on line 5 5, Fig'. 4,

Fig. 6,v is an enlarged detailed section on line `6--6, Fig. 4, and j IFig'. 7k is an enlarged fragmentary section on line 7 7,

` Fig. 3.

wound, their momentum of rotation is such that the padV i tension is not suicient to stop their rotation when the shuttle cornes to rest with the result that excess weft is paid oil and is likely to produce a slack pick.

LIt is the general object of the present invention to pro-` vide a shuttle operated brake or check which shall be moved against the quill to arrest its turning as the shuttle yapproaches the end of its travel.

The lays of narrow ware looms are ordinarily providedwithv spaced vshuttle blocks which receive the shuttles as they are moved in a direction generally lengthwise of the lay. It isa vfurther object of the invention to mount on each shuttle block a quill check which is normally out of the path of the shuttle but is operated by an actuator means normally in the path of the shuttle and moved by the latter to press the checking means against the quill when the shuttle is near the end of its travel in the block.

It is a still further object of the invention to make the checking and actuating means in the form of arms which are pivoted together and held in normal position by a spring which can yield to permit continued motion of the actuating arm. by the shuttle after the checking arm has engaged the quill.

v It is a stillfurther object of the invention to pivot the checkingandactuating arms to each other and provide resilient means such asa spring which holds the two armsin their normal positions buty can yield to permit movement by the shuttle. Stop means are provided to cooperate with the spring to 'hold the actuating arm in correct position for engagement by the shuttle.

Astill further object is toprovide a checking unit which can be readily mounted on a pivot on the shuttle block.

In order that the invention may be clearly understood reference is made to the 'accompanying .drawings which yillustrate by` way of example the embodiments of the invention'and in which:

',Fig.v l isafront elevatio-n of part of a narrow ware loom showing two shuttle blocks each equipped with a pair of shuttlecheck units made according to thein- Fig. 2 is an enlarged plan view looking in the direction of arrow 2,-Fig. 1,. i v

fFig: 3'is anenlarged detailed front elevation looking rReferring particularly to Fig. l, the'breast beamiof the looml is indicatedat 1 and the lay at 2. The lay has secured thereto a plurality of shuttle blocks extending upwardly therefrom,two of these blocks being Shown herein at 3 and 4. Beat-up reeds 5 are between the blocks and the latterv are provided with intersecting arcuate' grooves so that they can accommodate two shuttles, one at a'time. Thus, each blockhas intersecting grooves 6 and 7, groove 7 in block 3 being a continuation of groove 6 in blockA. Two shuttles S1 and S2 are shown in Fig. 1, shuttle S1 being in groove 7 of block 3 and s'huttle S2 being in a groove 7 of block 4.

These shuttles are alike, the shuttle S1 as shown in Fig. 2 having a quill space 10 and a pin 11 on which is mounted for rotation a quill 12 wound withv a mass of weft W which unwinds during the weaving operation and passes successively througheyes 13, 14, 15 and 16. VThe eyes 14 and 15 `are mounted on springs 17 so that they can be retracted to take up slack in weft. The eye 13 is on the inside of the bridge 18 of the shuttle and the eye 16 is the delivery eye through which the welt passes as it leaves the shuttle. The shuttles are operated in the usual manner as by pinions 20 and a rack'r'od 21. The vusual shuttle carried tension pad is shown at 22 in Fig. 2.

' During operation of the loom the lay swings backwardly and forwardly in usual manner and the rack rodk is reciprocated along it to cause each shuttle to move fromV one block across a reed space to an adjacent block. Thus, on one beat of the loom shuttle S1 will be in groove 7 of block 3 as shown in Fig. 1, and on the next beat shuttle S1 willbe in groove 6 of shuttle block 4. The weft thread unwinds from the quills and when the latter are fully wound and of large size they have a tendency torcontinue to rotate after the shuttle cornes to rest, thereby unwinding more weft than can be accommodated by the eyes 14 and 15. r The result of this continued rotation is to make therweft slack so that it is not drawn tightly in lthe fabric.

In carrying kthe invention into eect each shuttle block is Vprovided with checking means to cooperate with each" of the two shuttles which it canaccommodate. As shownr and U3 are the same while the units U2 and U4 are similar butof the opposite hand. A detailed description willk be given of but one of these units, namely unit U1, andl it will be understood that the description of this unit will suflice for the other units.

Referring particularly to Figs. 3 and 4,' shuttle block 3 is provided with a iixed pivot 25 extending forwardly therefrom and is also provided with a pin26 to which is attached one end of a positioning spring 27. The unit U1 includes in its construction an actuating means or arm 30 having a bearing 31 .to t the pivot 25. A cotter pin or the like 32 holds the arm 30 in position on the pivot. The left end of the arm 30 is provided with a stud 33 having a head 34y and a roll 35 located 3 between the head 34 and the arm 30, see Fig. 6 This roll is adapted for engagement with the left end 36 of shuttle S1. The arm 30 is also provided with an attaching means 37 for the left end of spring 27, and the block 3 `has a stop pin 38 which limits counterclockwise movement of the .arm 30 around' pivot 25. The Spring 27 cooperates with the pivot 2S and the stop 38 to maintain the roll 35 in the path of the shuttle, but in such position that the roll can' be raised by the-shuttle. The actuating arm 30 also has a stop 39 projecting forwardly therefrom for aV purpose to be set forth.

The unit U1 includes a checking arm 40 having on the outer end thereof a roll 41 which may be similar. `to

roll 35 for. engagement with the quill 12 of the shuttle. A pivotal connection between the arms 30 and 40 inf cludes a stud 42 screw threaded at 43 into arm 30 and having a lock nut 44 to hold the stud 42 firmly in position on the arm'30. The upper end of the arm 40 is pivoted on the shank 45 of stud 42 and the latter has a head 46 to limit forward movement of the arm 40. Formed integral with and extending upwardly from the arm 40 is a stop element or iinge'r 47 for engagement with the previously described stop 39.0n the arm 30.

A spring 50 has a coiled part 51 thereof surrounding the stud 42 and has two arms extending from the coiled part, one of these arms 52 extending to the left and beu ing bent to fit into a notch 53 in the top of arm 30, and the other arm 55 extending along arm 40and bent to t into a notch 56 in arm 4G. A spring 50 has the effect of holding the stop elements 39 and 47 against each other but permitting the arms 30 and 40Vto move angularly with respect to each other around the pivotal connection.

As Shuttle S1 moves to the left, but before reaching the end of its path of travel, unit U1 will be in the position shown in Fig. 3, spring 27 and the stop 38 cooperating to hold the unit with roll 35 positioned for engagement with the advancing left lend of the shuttle and with roll 41 spaced above the path of the shuttle and out of engaging position relative to the quill 12. As the shuttle S1 continues to move to the position shown in Fig. 4 it will lift the roll 35 and rock the unit in a clockwise direction around pivot 25, thereby lowering the roll 41 against the quill the effect of which is to arrest rotation of the quill. The diameter of the weft on the quill will diminish as weft is drawn from it so that the amount of motion of the roll 41 necessary to engage the quill will vary from a full quill to a nearly empty one. Whenv the quill is full there will be a com paratively large relative angular motion of the arms 30 and 4t) around their pivotal connection after roll 41 engages the quill, this angular motion being permitted -by the spring as tbc stops `39 and 47 separate from each other. When the quill is almost empty the relative angular motion of the arms or members 30 and 40 will be less. For all diameters of the yarn on the quill however the actuator arm 30 will provide sufficient motion to move the roll 41 against the. weft of the quill.

It is to be understood that the unit U3.will operate as does unit U1 when shuttle S2 moves to the left hand end of its path of motion, andthat unit U4 will act to check rotationrof the quill of shuttle S1 when the latter pivot 25. The spring 27 holds the actuating arm roll 35 in psiti foi" engagement with the shuttle, thijs iilhlig the latter when approaching the end of its travel to rock the unit around the pivot and cause roll 41 of the checking arm to engage the quill. The spring 50 permits a varying degree of relative angular motion of the arms and 40 depending upon the' diameter of the quill. Also, spring 27. cooperates with the pivot25 and the stop 38 to perform two functions one of which is t locate the roll normallyA in the path of the shuttle, `and the other of which is to hold the roll 41 out of the pathof the shuttle and quill priorto arrival of the shuttle at the point near the end of its path of movement. Furthermore, the invention provides a novel check uiit Which can be readily applied to. pivot 25.`

Having now particularly described and ascertained the nature of the invention and in what manner the same is to be performed, what isclaimed is; f

.. fiar; meref.

, 2. In a narrow ware loom having a shuttle movable along a path and provided with a rotatable weft quill which has a tendency to continue to rotate as the shuttle` approaches the end of said path, quill checking means normally spaced from lthe quill mounted for movement against the: quill, and an actuating arni normally extend# ing into 'said patht be engaged and moved by the shuttle tfo cause said checking means to move against the quill to arrest said' tendency thereof to rotate.

A 3. ln a quill checking unit for application to a narrow' ware loom shuttle block having a pivot and Va positioning spring thereon, an actuating member having a shuttle engaging'eleinent on one end thereof and having a bearing therein to receive said pivot, a quill checking member having a qiull engaging element at one end thereof, a "ivotal connection between the other ends of said mem- (ers, a stop o'n `one of said members, a stop element on the' other member to engage said stop, resilient means normally holding said stop element against said stopA Y yieldable to permit relative angular motion of said ineinber's around said pivotal connection, and attaching means onone of said members for said positioning spring enabling said spring and pivot to cooperate to hold the unit normal position when the unit is supported by saidpivt but permitting' said unit to move angularly around said pivot.

, around said pivotal connections and having two arms e'xis in block 4, the angular motion of the parts of the unit U4 being opposite to that already described in connection with the operation of unit U1.' rlheunit U2A will act'on another shuttle not shown herein, coming from the left as viewed in Fig. l, and entering block 3 as'shuttlesSl and S2 are moved to the right from the positions shown in Fig. 1. v

Fror'n the foregoing' it will be seenwthat the invention sets forth a checking means for the quills of narrow ware' shuttles operated by the latter as they near the end of their path of movement in the shuttle blocks. Each unit includes two arms or members 30 and 4Q which are pivoted to each other and are movable jointly around the tending Vfrom theV coiled part thereof, one arm for the actuating member and the other for the checking member.

5. In a narrow ware loom having a shuttle movable along Va pathy and provided with a'rotatable weft quill which has a tendency to continue to rotate as the shuttle approaches the end of said path, quill checking means including a roll rotatably mounted thereon for engagement with the quill and being normally spaced from the quill and mounted for movement against the quill, and actuating means operated by the shuttle as the latter approaches the end of said path to cause said checking means to move against the quill to resist said tendency thereof to rotate.

6, In a narrow'ware loom having a shuttle movable along' a path and provided with a rotatable weft` quill which has a tendency to continue to rotate as the shuttle approaches the end of said path, quill checking means normally spaced from the quill mountedv for movement against the quill, actuating means operated by the shuttle as the latter approaches the end of said path, a stop member limiting movement of said actuating means toward said path, and a spring connected to one of said means to hold one of said means against said stop member to place the actuating means normally in said path.

7. In a narrow ware loom having a shuttle moving along a path during loom operation and provided with a weft quill rotatable thereon, quill checking means normally spaced from the quill mounted for movement against the quill, actuating means operated bythe shuttle as the latter approaches the end of said path, said checking and actuating means being pivoted to each other and having mutually engaging stop elements, and a spring holding said angular movement of said checking and actuating means in a direction to separate said stop elements.

8. In a narrow ware loom having a shuttle moving along a path during loom operation and provided with a wett quill rotatable thereon, quill checking means normally spaced from the quill mounted for movement against the quill, actuating means operated by the shuttle as the latter approaches the end of said path, said actuating means being an arm swingable on a pivot on vthe lay for movement in a direction away from said path cooperates with said positioning means to limit movement of the actuating means toward said path.

References Cited in the me of this patent UNITED STATES PATENTS 2,391,314 Holmesy Dec. 18, 1945 

